Improvement in gates



M. CARTER.

Gat-

No. 197,599. Patented Nov. 27,1877.

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MORDEOAI CARTER, OF PLAINFIELD, INDIANA.

IMPROVEMENT IN GATES.

Specification forming part of Letters Patent No. 197,599, dated November27, 1877; application filed September 24, 1877.

To all whom it may concern:

Be it known that I, MORDEOAI CARTER, of the town of Plainfield, countyof Hendricks, and State of Indiana, have invented certain new and usefulImprovements in Automatic Gates, of which the following is aspecification:

Reference is had to the accompanying drawings, which are made a parthereof, and on which similar letters of reference indicatesimilar-parts.

Figure 1 is a side view of a closed gate embodying my invention. Fig. 2is a ground or plan view of the attachments which operate said gate andthe latch thereto, the gate itself and its posts being represented bydotted lines only. Fig. 3 is a detail drawing, showing the upright shaftG, its attachments, and the parts contiguous thereto, as seen from thedotted line a; :c.

In said drawings, those portions marked A represent the gate; B, thepost on which it is hung; B the post against which it shuts; B the postagainst which it rests when open; 0, rods by which the gate is operated;D, bent levers, against which the wheel of the vehicle strikes, andwhich operate the rods 0; E, a three-armed lever, by means of which therods 0 operate the gate A and the latch a spring connecting the arm 6 ofthe lever E and the arm G on the shaft G; G, an upright shaft, havingthe arms G and G,

and by means of which the requisite height to reach the latch isattained without running the rods obliquely. To the arm G on this shaftthe spring F is attached, and to the arm G the rod H, which connectswith the springlatch I, and releases said latch from the catch J whenoperated.

The spring F, instead of being attached directly to the lever E, ispreferably placed on the small bar f, which is then hinged to the lever;but while I have found this construction to work best in practice, it isnot imperative. v

The gate A is preferably hung upon the gudgeons a and a, though thebuilder may use any hinge he deems best. The gudgeon a, when used, willalso serve as a pivot for the lever E.

The operation of my gate is briefly as follows: The wheel of thevehicle, upon striking the upright part of one of the bent levers D,forces it down, and thus pulls, by means of the corresponding shortlever d, one of the rods 0. This rod in turn draws on the correspondingarm of the lever E, and then turns it partially around. This lever, bymeans-of the third arm 0, operates upon the spring F, turning the shaftG and the arms thereon, thus pulling the rod H, and releasing the latchI from the catch J. The gate being thus freed, and the tension of thespring having by this time become considerable, it is thereby forcedopen and against the post B After passing the gate, the wheels of thevehicle strike the bent lever on the opposite side thereof, and theother one of the rods G being pulled, the operation is reversed and thegate closed.

My "gate is simple and durable in construction and effective inoperation.

One of its advantages over other devices for the same purpose consistsin the peculiar operation of the three-armed leverE and the spring F.

In case of any obstruction of the gate, or any disarrangement of theparts, no damage will ensue from attempting to operate it, as the springis sufficiently flexible, so that the levers D can be forced entirelyover, and all the parts operated, without breaking or injuring any ofthem.

This same flexibility also prevents a sudden jar when the vehicle-wheelsstrike the levers D in ordinary use.

Having thus fully described my invention,

What I claim as new, and desire to secure by Letters Patent, is-

1. In an automatic gate, the combination of the levers D, rods 0,three-armed lever E, and spring F, for the purpose of opening andclosing the gate, substantially as herein shown and specified.

2. In an automatic gate, the combination of In witness whereof I havehereunto set my the three-armed lever E, spring F, shaft G, hand andseal at Indianapo1is,Indiana,f; this having arms G and G and rod H, forthe 20th day of September, A. D1877; purpose of operating the latch I,substantially as herein shown and specified. MORDECAI CARTER. [L. s.]

3. The combination of bent levers D, rods G, three-armed lever E, springF, shaft G, In presence ofhaving arms G and G rod H, latch I, and O.BRADFORD, gate A, forming an automatic gate, substan- CHAS. E. MARSH.tially as herein shown and specified.

